Phenolphthalein and Ortho-Tolidine Combination KitSKU: 1206
Many investigators use the combination of these two tests as a presumptive test and confirmatory test for the presence of blood. This kit is packaged in a plastic box containing all the premixed chemicals and supplies required to conduct both the Phenolphthalein Presumptive Blood Test and the O-Tolidine Test.
The premixed liquid reagents are in plastic dropper bottles. A non-human known blood standard is included to monitor the results.